![]() ![]() In this example from the Web of Science database, you can use the Basic search form to add multiple search lines by clicking on Add Another Field. Sometimes you will have to access the Advanced Search for these options. Many databases offer the functionality to separate out your search terms, and this saves you having to add the parentheses. Legal teams need to become adept at using Boolean searches searches that use commands such as AND, OR and NOT to refine the results. OR human as a secondary search - This means that your search results containing human would not be linked in any way to cloning.Add quotes to find messages in which the word you put first stays first. Boolean operators form the basis of mathematical sets and database logic. Use the number to say how many words apart the words can be. Find messages with words near each other. Select the Query Builder tab to construct your Boolean Search Query. Use the Browse button to select which folders to search in. ![]() If you do not use the parentheses and search using the following:Ĭloning AND sheep OR human, your search will be processed as: Tip: Once you do a search using search operators, you can use the results to set up a filter for these messages. At the bottom of the dialog, select: Create a custom Search Folder. ![]() When you use Boolean search logic, such as violat /5 rico and corn or wheat or soy /10 crop or industry, the service runs a terms & connectors search. A Boolean search uses specific words and symbols known as Boolean operators (e.g., AND, OR) alongside keywords to limit or expand search results. If you want to find information on cloning humans and cloning sheep, use the following instruction:Ĭloning AND (sheep OR human) - This will search for cloning AND sheep as well as cloning AND human The information in this article applies to the following LexisNexis ® products and services: Lexis+ ®, Lexis ®, Practical Guidance. If you use a combination of AND and OR operators in one search, use parentheses (brackets) to group the OR words together so that your search is processed correctly. They typically recognise AND as the primary operator and will connect concepts with AND together first. In other words, the results will not contain search term X. NOT narrows searches by excluding sources with a specified search term. In other words, the search results will contain search term X or search term Y or both. Databases usually process the Boolean operators in a logical order. OR broadens a search and is usually used when searching related or similar terms. ![]()
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